After drilling for several weeks they finally struck oil.

在钻探几个星期后, 他们终于油矿。

It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.

岩土工程勘察的一种手段，包括钻探、井探、槽探、坑探、洞探及物探、触探等。

It is the reason why the wildcatter, the independent oilman whose test drillings might come up dry 20 times before gushing in the end, is an enduring Texas symbol.

这就是为什么些在投机商，些个体石油商在石油喷前可能要试钻探多达二十次的原因，这也是德州一的标志。